Seiko Cal. 4447 - 851

The Seiko 4447-851 represents an important milestone in Seiko's 1966 lineup. Powered by the 4447 caliber with 24j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-38bddd24a2b6]

Also known as: Bullhead, Crown

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1966

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